Do not initialize gestureconfiguration in renderer process

When multiprocess is enabled for webview, do not initialize
gesture configuration in renderer process as this eventually
leads to accessing Window Manager Service.

BUG=640379

Bug: b/31045266
Review-Url: https://codereview.chromium.org/2272703008
Cr-Commit-Position: refs/heads/master@{#414445}

android_webview/lib/main/aw_main_delegate.cc

@@ -64,16 +64,6 @@ AwMainDelegate::~AwMainDelegate() {
 bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   content::SetContentClient(&content_client_);
 
-  content::RegisterMediaUrlInterceptor(new AwMediaUrlInterceptor());
-
-  BrowserViewRenderer::CalculateTileMemoryPolicy();
-
-  // WebView apps can override WebView#computeScroll to achieve custom
-  // scroll/fling. As a result, fling animations may not be ticked, potentially
-  // confusing the tap suppression controller. Simply disable it for WebView.
-  ui::GestureConfiguration::GetInstance()
-      ->set_fling_touchscreen_tap_suppression_enabled(false);
-
   base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
 
   // WebView uses the Android system's scrollbars and overscroll glow.
@@ -121,6 +111,15 @@ bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   if (cl->GetSwitchValueASCII(switches::kProcessType).empty()) {
     // Browser process (no type specified).
 
+    content::RegisterMediaUrlInterceptor(new AwMediaUrlInterceptor());
+    BrowserViewRenderer::CalculateTileMemoryPolicy();
+    // WebView apps can override WebView#computeScroll to achieve custom
+    // scroll/fling. As a result, fling animations may not be ticked,
+    // potentially
+    // confusing the tap suppression controller. Simply disable it for WebView
+    ui::GestureConfiguration::GetInstance()
+        ->set_fling_touchscreen_tap_suppression_enabled(false);
+
     base::android::RegisterApkAssetWithGlobalDescriptors(
         kV8NativesDataDescriptor,
         gin::V8Initializer::GetNativesFilePath().AsUTF8Unsafe());

android_webview/lib/main/aw_main_delegate.h

@@ -23,7 +23,10 @@ class AwContentBrowserClient;
 class AwContentGpuClient;
 class AwContentRendererClient;
 
-// Android WebView implementation of ContentMainDelegate.
+// Android WebView implementation of ContentMainDelegate. The methods in
+// this class runs per process, (browser and renderer) so when making changes
+// make sure to properly conditionalize for browser vs. renderer wherever
+// needed.
 class AwMainDelegate : public content::ContentMainDelegate,
                        public JniDependencyFactory {
  public: