Mark ImeTest#testImeCut and ImeTest#testImeCopy flaky

content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java

Index: content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
diff --git a/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
index 500fe84a84f9af2d1c8adb43265aa0b37fff2bf7..75809c5eed25af2fe6f5d46f93d4f5d330b78796 100644
--- a/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
+++ b/content/public/android/javatests/src/org/chromium/content/browser/input/ImeTest.java
@@ -197,6 +197,7 @@ public void testCommitEnterKeyWhileComposingText() throws Throwable {
 
     @SmallTest
     @Feature({"TextInput"})
+    @FlakyTest(message = "crbug.com/603991")
     public void testImeCopy() throws Exception {
         commitText("hello", 1);
         waitAndVerifyUpdateSelection(0, 5, 5, -1, -1);
@@ -531,6 +532,7 @@ public void testImeStaysOnLongPressingDifferentNonEmptyInputs() throws Exception
 
     @SmallTest
     @Feature({"TextInput"})
+    @FlakyTest(message = "crbug.com/603991")
     public void testImeCut() throws Exception {
         commitText("snarful", 1);
         waitAndVerifyUpdateSelection(0, 7, 7, -1, -1);