Add reserved optimization type

This CL adds a reserved optimization type to align with server-side
setup

Bug: b/294438673
Change-Id: I9da3b668b6359052849640f9cc5d4684c6601e71
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4756461
Commit-Queue: Yue Zhang <yuezhanggg@chromium.org>
Reviewed-by: Sophie Chang <sophiechang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1180423}

components/optimization_guide/proto/hints.proto

@@ -116,7 +116,7 @@ message GetHintsResponse {
 // Must sync with enum OptimizationType in enums.xml for metric recording.
 enum OptimizationType {
   // Values for obsolete optimizations.
-  reserved 11, 12, 16, 29;
+  reserved 11, 12, 16, 29, 32;
 
   TYPE_UNSPECIFIED = 0;
   // This optimization blocks JavaScript on the page.
@@ -193,7 +193,7 @@ enum OptimizationType {
   V8_COMPILE_HINTS = 31;
   // This optimization provides information about shoppinge page types of this
   // page.
-  SHOPPING_PAGE_TYPES = 32;
+  SHOPPING_PAGE_TYPES = 33;
 }
 
 // Presents semantics for how page load URLs should be matched.

tools/metrics/histograms/enums.xml

@@ -79550,7 +79550,7 @@ Called by update_net_trust_anchors.py.-->
   <int value="29" label="Deprecated1"/>
   <int value="30" label="PRICE_INSIGHTS"/>
   <int value="31" label="V8_COMPILE_HINTS"/>
-  <int value="32" label="SHOPPING_PAGE_TYPES"/>
+  <int value="33" label="SHOPPING_PAGE_TYPES"/>
 </enum>
 
 <enum name="OptOutBlacklistReason">