Move functions from web_local_frame_impl_find_in_page.cc to find_in_page.cc

We are moving find-in-page related functions out of
web_local_frame_impl_find_in_page.cc to its own class
(FindInPage) for easier mojoification and so that we can add
new find-in-page related functions more easily.

In this CL, we are moving functions out of
web_local_frame_impl_find_in_page.cc. In the next CL we are going to
entirely remove the functions from the WebLocalFrame interface.

Previous CLs:
crrev.com/c/956648
crrev.com/c/1025242

Next CLs:
Remove find-in-page functions from WebLocalFrame
Introduce FindInPage mojo interface

Bug: 819919
Change-Id: Ia82b5e8f1e08701b014236039d2c6e5e45410222
Reviewed-on: https://chromium-review.googlesource.com/1027013
Commit-Queue: Rakina Zata Amni <rakina@chromium.org>
Reviewed-by: Takayoshi Kochi <kochi@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553801}

third_party/blink/renderer/core/DEPS

@@ -46,8 +46,7 @@ specific_include_rules = {
         "+gin"
     ],
 
-    # Allow WebLocalFrameImplFindInPage.cpp to use WebLocalFrameImpl.h
-    "web_local_frame_impl_find_in_page.cc" : [
+    "find_in_page.cc" : [
         "+third_party/blink/renderer/core/frame/web_local_frame_impl.h",
     ],
 }

third_party/blink/renderer/core/frame/BUILD.gn

@@ -49,6 +49,8 @@ blink_core_sources("frame") {
     "event_handler_registry.cc",
     "event_handler_registry.h",
     "external.h",
+    "find_in_page.cc",
+    "find_in_page.h",
     "frame.cc",
     "frame.h",
     "frame_client.h",
@@ -167,7 +169,6 @@ blink_core_sources("frame") {
     "web_frame_widget_impl.h",
     "web_local_frame_impl.cc",
     "web_local_frame_impl.h",
-    "web_local_frame_impl_find_in_page.cc",
     "web_view_frame_widget.cc",
     "web_view_frame_widget.h",
   ]

third_party/blink/renderer/core/frame/web_local_frame_impl_find_in_page.cc → third_party/blink/renderer/core/frame/find_in_page.cc

@@ -28,13 +28,13 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
+#include "third_party/blink/renderer/core/frame/find_in_page.h"
 
 #include "third_party/blink/public/web/web_document.h"
 #include "third_party/blink/public/web/web_find_options.h"
 #include "third_party/blink/public/web/web_frame_client.h"
 #include "third_party/blink/renderer/core/editing/finder/text_finder.h"
-#include "third_party/blink/renderer/core/page/find_in_page.h"
+#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
 
 namespace blink {
 

third_party/blink/renderer/core/page/find_in_page.h → third_party/blink/renderer/core/frame/find_in_page.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_FIND_IN_PAGE_H_
-#define THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_FIND_IN_PAGE_H_
+#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FIND_IN_PAGE_H_
+#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_FIND_IN_PAGE_H_
 
 #include "third_party/blink/public/platform/web_common.h"
 #include "third_party/blink/public/web/web_local_frame.h"

third_party/blink/renderer/core/frame/web_local_frame_impl.cc

@@ -170,6 +170,7 @@
 #include "third_party/blink/renderer/core/exported/web_remote_frame_impl.h"
 #include "third_party/blink/renderer/core/exported/web_view_impl.h"
 #include "third_party/blink/renderer/core/frame/deprecation.h"
+#include "third_party/blink/renderer/core/frame/find_in_page.h"
 #include "third_party/blink/renderer/core/frame/frame_console.h"
 #include "third_party/blink/renderer/core/frame/local_dom_window.h"
 #include "third_party/blink/renderer/core/frame/local_frame_view.h"
@@ -210,7 +211,6 @@
 #include "third_party/blink/renderer/core/loader/navigation_scheduler.h"
 #include "third_party/blink/renderer/core/messaging/message_port.h"
 #include "third_party/blink/renderer/core/page/context_menu_controller.h"
-#include "third_party/blink/renderer/core/page/find_in_page.h"
 #include "third_party/blink/renderer/core/page/focus_controller.h"
 #include "third_party/blink/renderer/core/page/frame_tree.h"
 #include "third_party/blink/renderer/core/page/page.h"

third_party/blink/renderer/core/page/BUILD.gn

@@ -25,7 +25,6 @@ blink_core_sources("page") {
     "drag_session.h",
     "drag_state.h",
     "event_with_hit_test_results.h",
-    "find_in_page.h",
     "focus_changed_observer.cc",
     "focus_changed_observer.h",
     "focus_controller.cc",