Only generate suggested filenames when actually dragging an image.

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 471 matching lines @@
     "blob/BlobData.cpp",
     "blob/BlobData.h",
     "blob/BlobRegistry.cpp",
     "blob/BlobRegistry.h",
     "blob/BlobURL.cpp",
     "blob/BlobURL.h",
     "clipboard/ClipboardMimeTypes.cpp",
     "clipboard/ClipboardMimeTypes.h",
     "clipboard/ClipboardUtilities.cpp",
     "clipboard/ClipboardUtilities.h",
-    "clipboard/ClipboardUtilitiesPosix.cpp",
-    "clipboard/ClipboardUtilitiesWin.cpp",
     "cpu/mips/CommonMacrosMSA.h",
     "credentialmanager/PlatformCredential.cpp",
     "credentialmanager/PlatformCredential.h",
     "credentialmanager/PlatformFederatedCredential.cpp",
     "credentialmanager/PlatformFederatedCredential.h",
     "credentialmanager/PlatformPasswordCredential.cpp",
     "credentialmanager/PlatformPasswordCredential.h",
     "exported/InterfaceRegistry.cpp",
     "exported/Platform.cpp",
     "exported/ServiceRegistry.cpp",
@@ skipping 1000 matching lines @@
       "geometry/cg/FloatPointCG.cpp",
       "geometry/cg/FloatRectCG.cpp",
       "geometry/cg/FloatSizeCG.cpp",
       "geometry/cg/IntPointCG.cpp",
       "geometry/cg/IntRectCG.cpp",
       "geometry/cg/IntSizeCG.cpp",
     ]
   }
 
   if (is_win) {
+    sources += [ "clipboard/ClipboardUtilitiesWin.cpp" ]
     sources -= [
-      "clipboard/ClipboardUtilitiesPosix.cpp",
-
       # Uses LocaleWin instead.
       "text/LocaleICU.cpp",
       "text/LocaleICU.h",
     ]
     cflags = [
       "/wd4334",  # Result of 32-bit shift implicitly converted to 64 bits.
       "/wd4724",  # Modulo by 0.
     ]
   } else {
-    sources -= [
-      "clipboard/ClipboardUtilitiesWin.cpp",
-      "text/LocaleWin.cpp",
-    ]
+    sources -= [ "text/LocaleWin.cpp" ]
   }
 
   if (is_android) {
     # Add in some Linux files also shared with Android.
     set_sources_assignment_filter([])
     sources += [
       "fonts/linux/FontPlatformDataLinux.cpp",
       "fonts/linux/FontRenderStyle.cpp",
       "fonts/linux/FontRenderStyle.h",
     ]
@@ skipping 155 matching lines @@
     "WebVectorTest.cpp",
     "animation/AnimationTranslationUtilTest.cpp",
     "animation/CompositorAnimationHostTest.cpp",
     "animation/CompositorAnimationPlayerTest.cpp",
     "animation/CompositorAnimationTest.cpp",
     "animation/CompositorAnimationTimelineTest.cpp",
     "animation/CompositorFloatAnimationCurveTest.cpp",
     "animation/TimingFunctionTest.cpp",
     "audio/PushPullFIFOTest.cpp",
     "blob/BlobDataTest.cpp",
-    "clipboard/ClipboardUtilitiesTest.cpp",
     "exported/FilePathConversionTest.cpp",
     "exported/WebStringTest.cpp",
     "feature_policy/FeaturePolicyTest.cpp",
     "fonts/AcceptLanguagesResolverTest.cpp",
     "fonts/FontCacheTest.cpp",
     "fonts/FontDescriptionTest.cpp",
     "fonts/FontPlatformDataTest.cpp",
     "fonts/FontTest.cpp",
     "fonts/GenericFontFamilySettingsTest.cpp",
     "fonts/GlyphBufferTest.cpp",
@@ skipping 398 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }