Apply automatic range checks to enum types across IPC in content.

This is part of a long-running background task to remove the remaining
uses of the unchecked IPC_ENUM_TRAITS() macro.

BUG=246708

Review URL: https://codereview.chromium.org/604753002

Cr-Commit-Position: refs/heads/master@{#296868}

content/common/view_messages.h

@@ -85,8 +85,10 @@ IPC_ENUM_TRAITS(gfx::FontRenderParams::Hinting)
 IPC_ENUM_TRAITS(gfx::FontRenderParams::SubpixelRendering)
 IPC_ENUM_TRAITS_MAX_VALUE(content::TapMultipleTargetsStrategy,
                           content::TAP_MULTIPLE_TARGETS_STRATEGY_MAX)
-IPC_ENUM_TRAITS(content::StopFindAction)
-IPC_ENUM_TRAITS(content::ThreeDAPIType)
+IPC_ENUM_TRAITS_MAX_VALUE(content::StopFindAction,
+                          content::STOP_FIND_ACTION_LAST)
+IPC_ENUM_TRAITS_MAX_VALUE(content::ThreeDAPIType,
+                          content::THREE_D_API_TYPE_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(media::ChannelLayout, media::CHANNEL_LAYOUT_MAX - 1)
 IPC_ENUM_TRAITS_MAX_VALUE(media::MediaLogEvent::Type,
                           media::MediaLogEvent::TYPE_LAST)

content/public/common/stop_find_action.h

@@ -12,7 +12,8 @@ namespace content {
 enum StopFindAction {
   STOP_FIND_ACTION_CLEAR_SELECTION,
   STOP_FIND_ACTION_KEEP_SELECTION,
-  STOP_FIND_ACTION_ACTIVATE_SELECTION
+  STOP_FIND_ACTION_ACTIVATE_SELECTION,
+  STOP_FIND_ACTION_LAST = STOP_FIND_ACTION_ACTIVATE_SELECTION
 };
 
 }  // namespace content

content/public/common/three_d_api_types.h

@@ -13,7 +13,9 @@ namespace content {
 
 enum ThreeDAPIType {
   THREE_D_API_TYPE_WEBGL,
-  THREE_D_API_TYPE_PEPPER_3D
+  THREE_D_API_TYPE_PEPPER_3D,
+  THREE_D_API_TYPE_LAST = THREE_D_API_TYPE_PEPPER_3D
+
 };
 
 }  // namespace content