alternate ntp: implement searchbox api for instant overlay to adopt themes

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 500f7f30478da747b77a08a45270058dc2916509..db4cbcaab1c1261d5b8d93856bb8dbb24394dbb5 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -119,6 +119,8 @@ IPC_ENUM_TRAITS(InstantSuggestionType)
 IPC_ENUM_TRAITS(InstantShownReason)
 IPC_ENUM_TRAITS(search_provider::OSDDType)
 IPC_ENUM_TRAITS(search_provider::InstallState)
+IPC_ENUM_TRAITS(ThemeBackgroundImageAlignment)
+IPC_ENUM_TRAITS(ThemeBackgroundImageTiling)
 IPC_ENUM_TRAITS(TranslateErrors::Type)
 IPC_ENUM_TRAITS(WebKit::WebConsoleMessage::Level)
 
@@ -173,6 +175,18 @@ IPC_STRUCT_TRAITS_BEGIN(RendererContentSettingRules)
   IPC_STRUCT_TRAITS_MEMBER(script_rules)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(ThemeBackgroundInfo)
+  IPC_STRUCT_TRAITS_MEMBER(color_r)
+  IPC_STRUCT_TRAITS_MEMBER(color_g)
+  IPC_STRUCT_TRAITS_MEMBER(color_b)
+  IPC_STRUCT_TRAITS_MEMBER(color_a)
+  IPC_STRUCT_TRAITS_MEMBER(theme_id)
+  IPC_STRUCT_TRAITS_MEMBER(image_horizontal_alignment)
+  IPC_STRUCT_TRAITS_MEMBER(image_vertical_alignment)
+  IPC_STRUCT_TRAITS_MEMBER(image_tiling)
+  IPC_STRUCT_TRAITS_MEMBER(image_height)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(WebKit::WebCache::ResourceTypeStat)
   IPC_STRUCT_TRAITS_MEMBER(count)
   IPC_STRUCT_TRAITS_MEMBER(size)
@@ -298,6 +312,12 @@ IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxUpOrDownKeyPressed,
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxActiveTabModeChanged,
                     bool /* active_tab_is_ntp */)
 
+IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxThemeChanged,
+                    ThemeBackgroundInfo /* value */)
+
+IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxThemeAreaHeightChanged,
+                    int /* height */)
+
 // Toggles visual muting of the render view area. This is on when a constrained
 // window is showing.
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SetVisuallyDeemphasized,