Move WebCache from public/web into public/platform

chrome/browser/DEPS

Index: chrome/browser/DEPS
diff --git a/chrome/browser/DEPS b/chrome/browser/DEPS
index a7c968fdf352aca993eb812110b7c4a7cc0e243b..e10a03ffd3d606591cc7a638232d9f44c526aff0 100644
--- a/chrome/browser/DEPS
+++ b/chrome/browser/DEPS
@@ -94,6 +94,7 @@ include_rules = [
   # No inclusion of WebKit from the browser, other than strictly enum/POD,
   # header-only types, and some selected common code.
   "-third_party/WebKit",
+  "+third_party/WebKit/public/platform/WebCache.h",
   "+third_party/WebKit/public/platform/WebDisplayMode.h",
   "+third_party/WebKit/public/platform/WebLoadingBehaviorFlag.h",
   "+third_party/WebKit/public/platform/WebGestureEvent.h",
@@ -113,7 +114,6 @@ include_rules = [
   "+third_party/WebKit/public/platform/modules/webshare/webshare.mojom.h",
   "+third_party/WebKit/public/platform/site_engagement.mojom.h",
   "+third_party/WebKit/public/public_features.h",
-  "+third_party/WebKit/public/web/WebCache.h",
   "+third_party/WebKit/public/web/WebContextMenuData.h",
   "+third_party/WebKit/public/web/WebFindOptions.h",
   "+third_party/WebKit/public/web/WebMediaPlayerAction.h",